(Solved): please show all work and where you plug in numbers to equantions Problem No3: If the beam with the f ...

Problem No3: If the beam with the following unsymmetrical cross-section shown is subjected to the bending Moment $\mathrm{Mz}=20\mathrm{KN}-\mathrm{m}$. Assume the moment creates a compressive stress in the top flange of the beam. Determine the following: A) The centroid and the moment of inertia for the beam cross-section. B) The maximum bending stress in the beam. C) The bending stress distribution alone the beam height and cross-section. D) The total force acting on the lower flange of the beam.